Ed win hart



(No Model.)

E. HART. GYGLOMETER.

Patented 001;. 12,1897.

UNITED STATES 'PATENT trice.

EDWIN I'IART, OF WATERBURY, CONNECTICUT, ASSIGNOR TO 'TI-IE VATER- BURY WATCH COMPANY, OF SAME PLACE.

CYCLOMETER.

SPECIFICATION forming part of Letters IEatent No. 591,761, dated October 12, 1897'. Application filed May 29, 1896. Serial No. 593,637. (No model.)

To all whom t may concern: to the tenths-index C has pivoted to it a pawl Be it known that I, EDWIN HART, of Waterg, which is adapted to engage with a ratchetbury,y in the county of New Haven, and in the wheel H, secured to the side of said tenths- State of Connecticut, have invented certain wheel C, and when so engaged to cause the 5 new and useful Improvements in Cyclometurning of the latter. A spring I, attached ters; and I do hereby declare that the followat one end to the pawl and bearing at its other ingis afull, clear, and exact description thereend against a pin projecting from the disk G, of, reference being had to the accompanying tends to normally swing the pawl away from drawings, in which the ratchet-Wheel H. It is designed that for 6o ro Figure l is a perspective view of my cyeach revolution of the disk G the tenths-inclometer shown as applied to a bicycle. Fig. dex C shalll be rotated one-tenth, and to ef- 2 Ais a like View of the same with the casing fect this the pawl is thrown at the proper removed. Fig. 3 is a View in longitudinal time into engagement with the ratchet-Wheel section of the complete cyclometer. Figs. 4 vH against the stress of the spring I. A pin 65 [5 and 5 are respectively sections on the lines or stud K, attached to and projecting up a; and y y of Fig. 3. Fig. 6 is a detail perfrom the plate Ain the path of the pawl and spective view of the spring-pawls for the inengaging the same as it is carried along by dex-wheels, and Fig. 7 is a detail view in secthe disk G, constitutes the means by which tion of the tappet I use. the pawl is placed in engagement with the 7o 2o Letters of like name and kind refer to like ratchet-wheel. As soon as the pawl, by the parts in the several igures. rotation of the disk, is carried out of contact The object of my invention is to provide a with the pin or stud the spring I acts to dissimple and accurate cyclometer or register cngagethepawlandwheel. A precisely simifor use more especially with bicycles; and. to lar arrangement of disk, pawl, and pin, such 75 2 5 this end said invention consists in the conas is employed to communicate motion from struction and combination of parts, substanthe pinion D to the iirst or tenths index, is tially as and for the purpose hereinafter speciused to carry or transfer from the latter to ned. the units-disk, and so on throughout the se- In the carrying of my invention into pracries from the lower to the next higher. 8o 3o tice I employ a frame or support for the op- The periphery of each index-disk G is proerative parts of my cyclometer that consists vided with a series of concave notches g and of a horizontal base-plate A and two vertical g', corresponding in number to the numerals arms aand a at the ends thereof. Supported onv the indexes, while the periphery of the by said arms is ashaft or rod B, upon which, disk carried by the pinion has nine of said 85 3 5 side by side, are placed a series of index or notches, and adapted to cooperate with the registering wheels C and C, the periphery of notched periphery of each disk to hold the each of which bears numerals from l to same to the point to which it may be moved 0, the rst wheel of the series indicating is a spring finger or pawl Z, that is attached tenths, the second units, the third tens, dac. to and projects up from a plate L, fastened to 9o 4o Mounted loosely upon the rod B, between the base-plate A. The pressure of the springthe tenths-index and the adjacent arm a, is a pawl upon the notched disk While sufficient pinion D, that is adapted to be engaged and to prevent accidental turning is not so great moved by a tooth e upon the inner end of a as to seriously impede the revolution of the shaft E, which is journaled directly below the disk at -the proper time. It will beobserved 95 45 rod B in a bearing a on said arm a and upon that all of the registering mechanism is mountits outer end carries a star-wheel F, whose ed upon the base-plate A. Said mechanism, teeth are adapted to be engaged by a tappet With of course the exception of the starplaced upon one of the spokes of a bicyclewheel, is housed in a casing M, whose bottom, wheel. sides, and ends are fiat, but whose top is semiloo 5o At the side of and rotating with the gearcylindrical, and in the top are provided the wheel D is a disk G, that on its side adjacent sight-openings for viewing the indexes. Said VIs openin gs, as shown, are formed by a longitudinal slot m in the casing, over which is placed a plate N, having a number of slots n and it, one for each index, a piece of isinglass O or other transparent medium being secured between said plate and the casing-top.

The registering mechanism is placed within and removed from the casing by making one end of the latter removable, and said end is preferably attached to a frame-arm a. When within the casing, said mechanism is secured by means of two screws P and P, that pass through the easing-bottom into the base-plate A. As the connecting means consists simply oi screws, it will be seen that the removal and replacement of the entire registering mechanism is a very easy thing.

To distinguish the numerals on the tenths or fraction index from those on the other indexes, I mark such numerals in sharply-contrasting colors, preferably using red on the tenths-index and black on the others.

llastened to the under side of the easing M is a bar or rib Q, that extends lengthwise oi' the same and is provided with a longitudinally-extending slot q. Engaging said rib is a U-shaped clamp or holder R upon the upper end of a bracket S, that is adapted to be fastened in the customary way to the axle of the bicycle-wheel and thus support the cyclometer in position to be actuated by said wheel. A screw T, passing through holes in said clamp and through the slot in the rib, and a nut U are the means for holding said parts together. The slot enables the position ot the cyclometer to be shifted toward or from the wheel, as may be required.

The tappet for engaging the star-wheel consists of two bars V and V', that are clamped to the spoke of the wheel by screws lV and W on opposite sides of the spoke, the former of which bars has an end projecting beyond the other that strikes the teeth or points ot the star-\vheel. The inner sides of the two bars that engage the spoke are grooved to `lit the latter, and as the Wheel-spoke is commonly arranged to extend in a tangential and not a radial line such grooves are inclined to compensate for this, so as to enable the tappet end to `fairly strike the star-wheel tooth.

It is thought the operation oi the registering mechanism -has been made sul'liciently clear in describing its construction to render `further description unnecessary.

My cyclometer is small and compact, and owing to the duplication of parts in the registering mechanism ean be cheaply manufach tured.

By making the index-nu merals oi' the tenths or fractions of a mile in a color contrastiliig with the markings of the complete miles it will be seen that no confusion in reading the registration can occur, as might be the caso were the numerals of all oi' the index-wheels similarly marked.

Having thus described my invention, what l claim is l. In a registering mechanism, the eomln' nation of a base-piece having arms, a 'rod or shaft supported by said arms, a series ol wheels journaled on said rod or shaft, a sha1.l t carrying a driving-wheel, supported by one of said arms, a casing side attached to said arm, and a easing within which all of the mechanism mounted on the base, except said driving-wheel, is inclosed, such mechanism being removable from the casing through an opening that is closed by the easing side aitached to the base-piece arm, substantially as and for the purpose speeiiied.

2. A tappet for cyclometers consisting ol two spoke-en gagin g bars, and screws to clam p said bars on the spoke, the sides ol the bars that engage the spokehavinginclinedgrooves, substantially as and for the pu rposc described.

In testimony that l claim the foregoing lA have hereunto set my hand this 15th day ol' May, 1896.

EDWIN llAlt'l,

\Vit11esses:

S. L. ARTHUR, J. E. Dicknmmn. 

